Bolt-nut mechanism

Abstract

When the steering member is mounted on the frame, play is eliminated, left-handed bolt thrust is stabilized, and component costs are reduced. A right-handed bolt (4) with a locking mechanism (7) that utilizes metal contact is provided on the threaded portion, a left-handed left-handed bolt (5) that has an internal thread that cooperates with the aforementioned bolt on the inner diameter portion, and the aforementioned left-handed bolt. The fixed nut (6) with the left thread or the part (14) processed by the internal thread is composed of these three parts. Utilize the locking mechanism of the bolts to narrow the space between the inner plate (2b) and the top surface of the head of the left-handed bolts and abut against the left-handed bolts to eliminate the gap between the vehicle frame and the steering member bracket (1a). And when performing installation work, the bolt is screwed into the left-handed bolt, and the bolt bearing surface is located on the outer plate (2a) to generate fastening force. The tightening force is transmitted through the left-handed bolt to install the steering member. Also can not use welding nut, and the internal thread that cooperates left-handed bolt is set on steering member bracket.

Description

technical field [0001] The invention relates to a bolt and nut mechanism for installing modular assemblies such as steering components on a vehicle frame. Background technique [0002] When mounting the steering member as a modular assembly on the vehicle frame, there is a gap (space) 110 between the steering member and the vehicle frame, and the steering member is mounted on the vehicle frame so as to absorb the gap 110 . [0003] In Patent Document 1, such as Figure 11 to Figure 13 As shown, the bolt and nut mechanism has: a nut 120 that has an internal reverse thread 125 and an internal positive thread 126 with a diameter smaller than the internal reverse thread 125 and is welded on the steering member 117; There is a bushing 119 with an external negative thread 124 and an internal positive thread 123 on the inside; an external positive thread 122 that can be screwed on the internal positive thread 123 of the bushing 119, and can be inserted from the insertion hole of th...

AI Technical Summary

Problems solved by technology

However, it is difficult to weld and fix the nut 120 to aluminum alloy or magnesium alloy, so there is a problem that weight reduction cannot be achieved.

[0016] In addition, when electrically grounding the vehicle frame from a modular assembly such as the steering member 117, it is necessary to separately provide a ground terminal on the modular assembly, peel off the paint film of the vehicle frame, and use bolts or the like to electrically ground the ground. There is a problem of troublesome grounding connection between the terminal and the frame

Images